Egypt’s Tourism and Antiquities Ministry said the 1.3 kilometer-long (0.8 miles) tunnel was cut into the rock beneath Egypt’s ancient Taposiris Magna Temple.
The excavation was conducted by a Dominican-Egyptian archaeological mission from the University of San Domingo.
“This is the perfect place for the tomb of Cleopatra,” Dr. Kathleen Martinez, who headed the joint mission, told Heritage Key.
“If there’s a one percent chance that the last queen of Egypt could be buried there, it is my duty to search for her,” Martinez said.